Moved Linux build scripts into Build sub-folder.

Updated readme for 4.18 release.

Added 4.17 API changes.

Added latest nightly builds of libvlc; updated readme.

Prevent loading of plug-in in console apps.

Updated UE4 version.

Fixed no audio output if audio sink set while playback in progress.

Cleaned up dependency loader.

Fixed non-unity build.

Update README.md